Set top box



FIG. 1 is a top perspective view of a set top box.

FIG. 2 is a front view of the set top box.

FIG. 3 is a rear view of the set top box.

FIG. 4 is a right side view of the set top box.

FIG. 5 is a left side view of the set top box.

FIG. 6 is a top view of the set top box.

FIG. 7 is a bottom view of the set top box; and,

FIG. 8 is a top perspective view of the set top box shown in an alternate configuration.

The broken lines shown in the drawings show unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a set top box, as shown and described. 